Comparison of the current situation of the most po

Comparison of the current situation of bag making, filling and packaging machines at home and abroad

the development of packaging machinery in China is relatively late, and it is currently in the initial application stage. Moreover, due to the technical level of users and the limitations of various environmental factors, I have also reduced its environmental impact. The need for packaging machinery in China is like a "pyramid". The demand for high, precision and sophisticated equipment is the spire, and the more sophisticated the equipment, the smaller the demand; The demand for medium and low-grade equipment is like the bottom of the "pyramid", with large volume and wide range, and unlimited business opportunities. With the continuous increase of market demand, China's bag making, filling and packaging machines have developed rapidly after the 1990s. Through reference to foreign products, digestion, absorption, independent development and research, the technology has been greatly improved, and the measurement range ranges from 1g to 1000g, especially in product function and automation. However, the huge service hidden dangers emerging from the rapid development began to cause concern in the market, especially many small enterprises, which basically produced without the scale investment of fixed assets such as manufacturing and quality assurance, resulting in the entry of a large number of small opportunistic enterprises. These small enterprises have little development planning, technical reserves and technological upgrading capabilities, but just want to make some products and leave immediately after making some profits when a hot product is emerging; There is no or no appropriate resource investment for the technical improvement in the field of packaging machines

it is for this reason that these enterprises use simple and low-grade raw materials, which have neither quality assurance nor standardized process requirements to manufacture products and dump them at low prices. These products without quality assurance, nonstandard installation and commissioning, as well as false service commitments, have cast a shadow on the reputation of the entire industry in recent years; At the same time, the enthusiasm of enterprises engaged in large-scale R & D and production in the field of packaging machines is also a blow, delaying the pace of packaging machines to the high-tech field and hindering the development of the packaging machine industry

at present, there are more than 50 domestic enterprises producing bag making, filling and packaging machines, but most of the products have low technical content, low degree of product differentiation, and mature product technologies are easy to imitate and plagiarize, resulting in low-level duplication, which hinders the technological innovation and development of packaging machines. China may soon become a major manufacturer of packaging machinery, but it is still difficult to get rid of the status of "small brand country"

in terms of product technology, the main characteristics of foreign packaging machines are our main gap

(1) low speed and few varieties

most domestic bag making, filling and packaging machines are generally between 20 ~ 100 bags/minute according to the different packaging materials and the size of the output. Most of them are single row packaging, and the sealing forms are generally three side sealing, four side sealing and back sealing. There is no automatic packaging machine for self-supporting bags and organ bags in China

(2) low accuracy

for the powder metering and filling system with screw filling, when the filling amount is 100g ~ 1000g, the metering accuracy of foreign machines is generally 1%. For example, the filling range of the dos-c/102 vertical packaging machine of Italian seram company is 50 ~ 2000ml, and there is an intersection between products. The filling speed is 70 bags/minute. There is development potential in the fields of metrology, transportation and construction, and the accuracy is 0.5 ~ 2%. The accuracy of Tokyo automatic machinery Sigma3 can reach 60.25%. The maximum filling capacity is 1.2kg, and the maximum filling speed is 100 bags/min

domestic powder packaging machines using screw metering and filling mostly have a metering accuracy of 62% - 63%. When used for low-dose packaging, they can basically meet the packaging requirements of users, but when the dose is large, it is difficult to meet the actual requirements of users. For example, domestic milk powder is generally 400g ~ 500g per bag. If the error is controlled by 62% - 63%, it is obviously unacceptable to users

(3) low reliability

due to the great differences in the particularity of packaging materials, the fluidity and viscosity of materials are different, and some materials require the machine to have anti-corrosion ability. Therefore, even the same type of packaging machine cannot widely adapt to the packaging of various materials, so it is necessary to design or adopt different filling mechanisms or different materials for materials. However, in order to make money quickly in the early stage of product production, some enterprises dump their products at low prices by using electronic components, control components or low-grade raw materials without quality assurance, plus there is no standardized processing and assembly process, and there is no transformation for specific use conditions, resulting in unstable products or unsuitable for users' use requirements, causing huge losses to users

(4) low level of automation and intelligence

in recent years, although China's bag making, filling and packaging machines have adopted some PLC and instruments with intelligent control function, generally speaking, most of them are still low-level electromechanical control, and there are no machines with data storage, acquisition and correction functions